Pull-rod coupling



E. HENSLEY.

PULL ROD COUPLING.

APPLICATION FILED IAN. Ie, 1922.

L I Patented Oct. MII, E922,

2 SHEETS-SHEET l.

INVENTOR.

`I fl- A TTORNEYS.

E. HENSLEY.

PULL Roo couPuNG. y APPLICATION FILED JAN.16, 1922. v 1,431,304., Patented 0G13. l0, 1922.

2 SHEETS-SHEET INVENTOR. /f@ mg@ A TTORNEYS.

y f/mwf/;@,

Patented @et ld, i922.,

entre stars tenant earner creme@ FULL-RGD COUPLING.

Application tiled January 16, 19%. Serial No. 529,769.

To all whom t may concern.'

lite it known that l, ELI HENSLEY, a citizen of the United States, residing in llvild Horse District, county of Osage, and State of Oklahoma, have invented certain new and useful improvements in Pull-Rod Couplings, of which the following is a specification.

This invention relates to an improved coupling for the end of the rod sections comprising rod 'lines such as are used in operating oil well pumps from a central power house.

It has heretofore been the practice to unite these rod sections by means of clamps, in which the ends of the rods are rigidly secured,- by means of bolts, and to pivot each clamp to a swinging support, which oscillates as the rod line is reclprocated. lt has been found, however, that the slight but constant bending of the rods adjacent such clamps, due to the arcuate movement of the swinging supports, finally results in the rods breaking od'.

The primary object of the present invention is *to provide cheap, practical and efficient means for coupling the ends of the rod sections in such a way as to permit the necessary pivotal movement so as to prevent the rods from being broken by the swinging of the aforesaid supports, and an incidental object is to provide a 4coupling of such a nature that the broken and discarded rod sections which are to be found scattered alon existing rod lines may be utilized.

Wiilth the above ends in view, I have devised a special universal coupling link to which both the rod sections and the swinging support may be pivotally attached, thus forming a coupling'.-

ln order that the invention may be readily understood, reference is had to the accompanying drawingsy forming a part of this specification, and in which:

Figure 1 is a perspective view illustrating a general arrangement or lay out in which my invention can be advantageously employed;

Figure 2 is a perspective view of a combination clamp used to connect the rod sections with my universal link;

Figure 3 is a perspective View of the universal link itself/ a fragment of one ofthe supporting devices being shown as attached thereto; and

Figure t is a plan view illustrating the manner in which my' improved universali lmk may be employed in connection with that type of support known as a hold-over.I

Referring to the drawings in detail, l t@ designates a power house containing a suitable source of power by means of which a reciprocatin movement is imparted to the rod line, suc line being shown as comprising sections 2 of suitable length, and con- 65 nected at the distant end to the operating lever 3 of a suitable pumping jack which is attached to the pump rod 4in the usual, or any desired way.

y improved universal link is designated in its entirety by the reference numeral 5, and as clearly shown in Figures 3 and 4, comprises a plate provided with four holes or openings therethrough arranged preferably as the four corners of a diamond.

Three of these holes a, b, c, are preferably larger than the other hole d, for a purpose hereinafter to be explained.

Serving to connect the rod sections 2 with the universal link 5 are combination clamps, 8o

ing grooves formed in their adjacent faces and held together by means of bolts 7, four of such bolts being shown. The grooves in the blocks, when the blocks are assembled, form three parallel sockets.. The middle one of these sockets receives the end of a ao rod section 2, while the two outside sockets are adapted 'to receive the ends of a itl-shaped loop or shackle e.

It will be understood that in assembling the rod line the shackles e are passed through the openings, such as a and c, in the umversal l ink 5, asindicated in dotted lines in Figure 3, and the ends of the shackles are then inserted in the outermost sockets inthe combination clamps and the bolts 'l' tight- 100 cned-up, thus forming an effective coupling. It will be noted, however, that the adjacent rod sections are, capable of a pivotal movement relative to each other and to the universal link 5, by reason of the engagement of the loops or shackles e in the holes of the link.

As is customary in oil well pumping, the rod line is supported by what are known as hold-ups and hold-downs, the former being used on level stretches or on hills, and

the latter being employed where there is a manana depression in the surtace ol the ground. ln Figure l, the reterence numeral 8 designates the swinging rod or support ot a holddown, and the lovver ond ol this rod is biturcated, as shown at 9 in Figure 3, so as to straddle the universal linlt 5, and is pivotu ally connected with such link by means ot a pin or bolt l0 extending through the opening d thereot.

The upper end ot the rod t3 is preferably provided vvith a Wlmhead or cross bar ll on which it is pivotally supported in a suitable trame l2.

Similarly, the hold up comprises a swinging bar or rod t3 havingP a biturcated upper end vvhich is adapted to be pivotally connected With the hole din my universal linlr, when the linlr is used in reverse position trom that in which it is eniployed in connection vvith a hold-down. The rod 13 ot the hold-up is pivotally mounted so as to be capable ot swinging; movement, such mounting being;F shown in the present instance as comprising" a IlV-head or cross bar ll supported on a suitable base l5.

ln lllig'ure lll have illustrated my improved link as it appears when employed in connection With what is lrnown as a holdover. Hold-overs are used when it is necessary to malte a bend in the rod line so as avoid some obstruction. ln Figure l l have shown two rod sections 2 connected vvith the holes a and c ot the link 5 by means ol combination clamps as shown in Figure 2.. and l have shovvn a third combination clamp `vvith its shackle engaging' the hole o, such third clamp being connected with a rod 2al which is pivotally connected with a post l@ or other tired abutment in any suitable Way, as by bendingr around the same as indicated at 2b. 'llhus the rod sections 2 are held out of alinernent with each other by means ol the tire rod 2Ll and it becomes possible to malte a bend in the rod'line so as to avoid an obstruction.

llt will thus be seen that l have provided a universal linlt 5 `which can be employed either in connection with hold ups, holddowns or hold-overs, and l have so connected the rod sections with this universal linlr by means ot combination clamps, that they can partake of pivotal movement relative thereto and are thus prevented troni bending and becomingn broken.

lt is therefore thought that the many atl-I vantages ot my improved universal linlr and rod coupling,r will be tullyappreciated by those slrilled in the art Wit-hout 'lurther discussion.

lll/'hat ll claim is:

l. 'l`he combination with a swingingn support, ot' a linlr carried thereby and comprisingr a plate having a plurality ot perforations, and rod sections pivotally connected with said late by means passing through some ot said peritorations.

2. rll`he combination with a pair ot rod sections, ot a clamp and shackle secured to each rod section, a plate havingn pertorations through which said shackles pass, and a swinging support pivotally connected with said'plate.

3. '.lhe combination With a rod line ot a. universal linlr comprising a plate having' four perforations therein, one ot said perlorations beingP adapted to receive a pivot pin lor connecting said plate with a swinging support, and the others of said pertorations being); adapted to receive loops connected with rod sections whereby said universallink may be employed, according to the perlorations used, either in connection with hold-ups, hold-downs, or hold-overs.

ln testimony vvhereot l allix my signature.

llhl HlElllSlJlEY,

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